/ Dictionary / Index F fluoridize: Meaning and Definition of Find definitions for: fluor•i•dize Pronunciation: (floor'i-dīz", flôr'-, flōr'-), [key] — -dized, -diz•ing. to treat, impregnate, or affect with a fluoride. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fluoridize (Thesaurus) fluoride fluorimeter Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language